1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 #define _GNU_SOURCE 2 #define _GNU_SOURCE
3 #define __EXPORTED_HEADERS__ 3 #define __EXPORTED_HEADERS__
4 4
5 #include <stdio.h> 5 #include <stdio.h>
6 #include <stdlib.h> 6 #include <stdlib.h>
7 #include <linux/fcntl.h> 7 #include <linux/fcntl.h>
8 #include <linux/memfd.h> 8 #include <linux/memfd.h>
9 #include <unistd.h> 9 #include <unistd.h>
10 #include <sys/syscall.h> 10 #include <sys/syscall.h>
11 11
12 #include "common.h" 12 #include "common.h"
13 13
14 int hugetlbfs_test = 0; 14 int hugetlbfs_test = 0;
15 15
16 /* 16 /*
17 * Copied from mlock2-tests.c 17 * Copied from mlock2-tests.c
18 */ 18 */
19 unsigned long default_huge_page_size(void) 19 unsigned long default_huge_page_size(void)
20 { 20 {
21 unsigned long hps = 0; 21 unsigned long hps = 0;
22 char *line = NULL; 22 char *line = NULL;
23 size_t linelen = 0; 23 size_t linelen = 0;
24 FILE *f = fopen("/proc/meminfo", "r"); 24 FILE *f = fopen("/proc/meminfo", "r");
25 25
26 if (!f) 26 if (!f)
27 return 0; 27 return 0;
28 while (getline(&line, &linelen, f) > 0 28 while (getline(&line, &linelen, f) > 0) {
29 if (sscanf(line, "Hugepagesize 29 if (sscanf(line, "Hugepagesize: %lu kB", &hps) == 1) {
30 hps <<= 10; 30 hps <<= 10;
31 break; 31 break;
32 } 32 }
33 } 33 }
34 34
35 free(line); 35 free(line);
36 fclose(f); 36 fclose(f);
37 return hps; 37 return hps;
38 } 38 }
39 39
40 int sys_memfd_create(const char *name, unsigne 40 int sys_memfd_create(const char *name, unsigned int flags)
41 { 41 {
42 if (hugetlbfs_test) 42 if (hugetlbfs_test)
43 flags |= MFD_HUGETLB; 43 flags |= MFD_HUGETLB;
44 44
45 return syscall(__NR_memfd_create, name 45 return syscall(__NR_memfd_create, name, flags);
46 } 46 }
47 47
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